TitanGraph 类型未定义方法 makeType()
The method makeType() is undefined for the type TitanGraph
我正在尝试创建一个 Titan Graph 示例，但出现错误。
我 pom.xml 如下：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion
<groupId>com.titanobwebservices.services</groupId>
<artifactId>titanob-services</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>titanob-services Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>com.thinkaurelius.titan</groupId>
<artifactId>titan-core</artifactId>
<version>0.4.4</version>
</dependency>
<dependency>
<groupId>com.thinkaurelius.titan</groupId>
<artifactId>titan-berkeleyje</artifactId>
<version>0.4.4</version>
</dependency>
<dependency>
<groupId>com.thinkaurelius.titan</groupId>
<artifactId>titan-es</artifactId>
<version>0.4.4</version>
</dependency>
</dependencies>
<build>
<finalName>titanob-services</finalName>
</build>
</project>
GodOfGraphFactory.java如下：
package com.titanos.webservices;
import static com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.INDEX_BACKEND_KEY;
import static com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.STORAGE_DIRECTORY_KEY;
import java.io.File;
import org.apache.commons.configuration.BaseConfiguration;
import org.apache.commons.configuration.Configuration;
import com.thinkaurelius.titan.core.TitanFactory;
import com.thinkaurelius.titan.core.TitanGraph;
import com.thinkaurelius.titan.core.TitanKey;
import com.thinkaurelius.titan.core.attribute.Geoshape;
import com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration;
import com.tinkerpop.blueprints.Direction;
import com.tinkerpop.blueprints.Edge;
import com.tinkerpop.blueprints.Vertex;
import com.tinkerpop.blueprints.util.ElementHelper;
public class GraphOfTheGodsFactory {
public static final String INDEX_NAME = "search";
public static TitanGraph create(final String directory) {
BaseConfiguration config = new BaseConfiguration();
Configuration storage = config.subset(GraphDatabaseConfiguration.STORAGE_NAMESPACE);
// configuring local backend
storage.setProperty(GraphDatabaseConfiguration.STORAGE_BACKEND_KEY, "local");
storage.setProperty(GraphDatabaseConfiguration.STORAGE_DIRECTORY_KEY, directory);
// configuring elastic search index
Configuration index = storage.subset(GraphDatabaseConfiguration.INDEX_NAMESPACE).subset(INDEX_NAME);
index.setProperty(INDEX_BACKEND_KEY, "elasticsearch");
index.setProperty("local-mode", true);
index.setProperty("client-only", false);
index.setProperty(STORAGE_DIRECTORY_KEY, directory + File.separator + "es");
TitanGraph graph = TitanFactory.open(config);
GraphOfTheGodsFactory.load(graph);
return graph;
}
public static void load(final TitanGraph graph) {
graph.makeType().name("name").dataType(String.class).indexed(Vertex.class).unique(Direction.BOTH).makePropertyKey();
graph.makeType().name("age").dataType(Integer.class).indexed(INDEX_NAME, Vertex.class).unique(Direction.OUT).makePropertyKey();
graph.makeType().name("type").dataType(String.class).unique(Direction.OUT).makePropertyKey();
final TitanKey time = graph.makeType().name("time").dataType(Integer.class).unique(Direction.OUT).makePropertyKey();
final TitanKey reason = graph.makeType().name("reason").dataType(String.class).indexed(INDEX_NAME, Edge.class).unique(Direction.OUT).makePropertyKey();
graph.makeType().name("place").dataType(Geoshape.class).indexed(INDEX_NAME, Edge.class).unique(Direction.OUT).makePropertyKey();
graph.makeType().name("father").unique(Direction.OUT).makeEdgeLabel();
graph.makeType().name("mother").unique(Direction.OUT).makeEdgeLabel();
graph.makeType().name("battled").primaryKey(time).makeEdgeLabel();
graph.makeType().name("lives").signature(reason).makeEdgeLabel();
graph.makeType().name("pet").makeEdgeLabel();
graph.makeType().name("brother").makeEdgeLabel();
graph.commit();
// vertices
Vertex saturn = graph.addVertex(null);
saturn.setProperty("name", "saturn");
saturn.setProperty("age", 10000);
saturn.setProperty("type", "titan");
Vertex sky = graph.addVertex(null);
ElementHelper.setProperties(sky, "name", "sky", "type", "location");
Vertex sea = graph.addVertex(null);
ElementHelper.setProperties(sea, "name", "sea", "type", "location");
Vertex jupiter = graph.addVertex(null);
ElementHelper.setProperties(jupiter, "name", "jupiter", "age", 5000, "type", "god");
Vertex neptune = graph.addVertex(null);
ElementHelper.setProperties(neptune, "name", "neptune", "age", 4500, "type", "god");
Vertex hercules = graph.addVertex(null);
ElementHelper.setProperties(hercules, "name", "hercules", "age", 30, "type", "demigod");
Vertex alcmene = graph.addVertex(null);
ElementHelper.setProperties(alcmene, "name", "alcmene", "age", 45, "type", "human");
Vertex pluto = graph.addVertex(null);
ElementHelper.setProperties(pluto, "name", "pluto", "age", 4000, "type", "god");
Vertex nemean = graph.addVertex(null);
ElementHelper.setProperties(nemean, "name", "nemean", "type", "monster");
Vertex hydra = graph.addVertex(null);
ElementHelper.setProperties(hydra, "name", "hydra", "type", "monster");
Vertex cerberus = graph.addVertex(null);
ElementHelper.setProperties(cerberus, "name", "cerberus", "type", "monster");
Vertex tartarus = graph.addVertex(null);
ElementHelper.setProperties(tartarus, "name", "tartarus", "type", "location");
// edges
jupiter.addEdge("father", saturn);
jupiter.addEdge("lives", sky).setProperty("reason", "loves fresh breezes");
jupiter.addEdge("brother", neptune);
jupiter.addEdge("brother", pluto);
neptune.addEdge("lives", sea).setProperty("reason", "loves waves");
neptune.addEdge("brother", jupiter);
neptune.addEdge("brother", pluto);
hercules.addEdge("father", jupiter);
hercules.addEdge("mother", alcmene);
ElementHelper.setProperties(hercules.addEdge("battled", nemean), "time", 1, "place", Geoshape.point(38.1f, 23.7f));
ElementHelper.setProperties(hercules.addEdge("battled", hydra), "time", 2, "place", Geoshape.point(37.7f, 23.9f));
ElementHelper.setProperties(hercules.addEdge("battled", cerberus), "time", 12, "place", Geoshape.point(39f, 22f));
pluto.addEdge("brother", jupiter);
pluto.addEdge("brother", neptune);
pluto.addEdge("lives", tartarus).setProperty("reason", "no fear of death");
pluto.addEdge("pet", cerberus);
cerberus.addEdge("lives", tartarus);
// commit the transaction to disk
graph.commit();
}
}
但我收到以下错误..
Exception in thread "main" java.lang.Error: Unresolved compilation problems: The method makeType() is undefined for the type TitanGraph
at com.titanos.webservices.GraphOfTheGodsFactory.load(GraphOfTheGodsFactory.java:52)
at com.titanos.webservices.GraphOfTheGodsFactory.create(GraphOfTheGodsFactory.java:46)
at com.titanos.webservices.exampletest.main(exampletest.java:13)
我也附上了屏幕截图..
我找不到我在这个项目中缺少的依赖项。
您遇到编译错误，因为 TitanGraph 上没有方法 makeType()。如果您查看 Titan 0.4.4 javadoc for TitanGraph, you will see the available methods. See also the migration notes from Titan 0.3.2 to 0.4.0 which point out the breaking changes in the API. GraphOfTheGodsFactory.java 打包在 Titan 本身中，那么您可以从该代码中看到如何正确定义模式。
Titan 0.4.4 大约在 2 年前发布。 Titan 1.0.0 于 2015 年 9 月发布，如果您刚开始使用 Titan，这将是一个更好的起点。访问 Titan homepage 以获取所有版本的更多详细信息和文档。确保您的文档与您正在构建的版本相匹配。
我正在尝试创建一个 Titan Graph 示例，但出现错误。
我 pom.xml 如下：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion
<groupId>com.titanobwebservices.services</groupId>
<artifactId>titanob-services</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>titanob-services Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>com.thinkaurelius.titan</groupId>
<artifactId>titan-core</artifactId>
<version>0.4.4</version>
</dependency>
<dependency>
<groupId>com.thinkaurelius.titan</groupId>
<artifactId>titan-berkeleyje</artifactId>
<version>0.4.4</version>
</dependency>
<dependency>
<groupId>com.thinkaurelius.titan</groupId>
<artifactId>titan-es</artifactId>
<version>0.4.4</version>
</dependency>
</dependencies>
<build>
<finalName>titanob-services</finalName>
</build>
</project>
GodOfGraphFactory.java如下：
package com.titanos.webservices;
import static com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.INDEX_BACKEND_KEY;
import static com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.STORAGE_DIRECTORY_KEY;
import java.io.File;
import org.apache.commons.configuration.BaseConfiguration;
import org.apache.commons.configuration.Configuration;
import com.thinkaurelius.titan.core.TitanFactory;
import com.thinkaurelius.titan.core.TitanGraph;
import com.thinkaurelius.titan.core.TitanKey;
import com.thinkaurelius.titan.core.attribute.Geoshape;
import com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration;
import com.tinkerpop.blueprints.Direction;
import com.tinkerpop.blueprints.Edge;
import com.tinkerpop.blueprints.Vertex;
import com.tinkerpop.blueprints.util.ElementHelper;
public class GraphOfTheGodsFactory {
public static final String INDEX_NAME = "search";
public static TitanGraph create(final String directory) {
BaseConfiguration config = new BaseConfiguration();
Configuration storage = config.subset(GraphDatabaseConfiguration.STORAGE_NAMESPACE);
// configuring local backend
storage.setProperty(GraphDatabaseConfiguration.STORAGE_BACKEND_KEY, "local");
storage.setProperty(GraphDatabaseConfiguration.STORAGE_DIRECTORY_KEY, directory);
// configuring elastic search index
Configuration index = storage.subset(GraphDatabaseConfiguration.INDEX_NAMESPACE).subset(INDEX_NAME);
index.setProperty(INDEX_BACKEND_KEY, "elasticsearch");
index.setProperty("local-mode", true);
index.setProperty("client-only", false);
index.setProperty(STORAGE_DIRECTORY_KEY, directory + File.separator + "es");
TitanGraph graph = TitanFactory.open(config);
GraphOfTheGodsFactory.load(graph);
return graph;
}
public static void load(final TitanGraph graph) {
graph.makeType().name("name").dataType(String.class).indexed(Vertex.class).unique(Direction.BOTH).makePropertyKey();
graph.makeType().name("age").dataType(Integer.class).indexed(INDEX_NAME, Vertex.class).unique(Direction.OUT).makePropertyKey();
graph.makeType().name("type").dataType(String.class).unique(Direction.OUT).makePropertyKey();
final TitanKey time = graph.makeType().name("time").dataType(Integer.class).unique(Direction.OUT).makePropertyKey();
final TitanKey reason = graph.makeType().name("reason").dataType(String.class).indexed(INDEX_NAME, Edge.class).unique(Direction.OUT).makePropertyKey();
graph.makeType().name("place").dataType(Geoshape.class).indexed(INDEX_NAME, Edge.class).unique(Direction.OUT).makePropertyKey();
graph.makeType().name("father").unique(Direction.OUT).makeEdgeLabel();
graph.makeType().name("mother").unique(Direction.OUT).makeEdgeLabel();
graph.makeType().name("battled").primaryKey(time).makeEdgeLabel();
graph.makeType().name("lives").signature(reason).makeEdgeLabel();
graph.makeType().name("pet").makeEdgeLabel();
graph.makeType().name("brother").makeEdgeLabel();
graph.commit();
// vertices
Vertex saturn = graph.addVertex(null);
saturn.setProperty("name", "saturn");
saturn.setProperty("age", 10000);
saturn.setProperty("type", "titan");
Vertex sky = graph.addVertex(null);
ElementHelper.setProperties(sky, "name", "sky", "type", "location");
Vertex sea = graph.addVertex(null);
ElementHelper.setProperties(sea, "name", "sea", "type", "location");
Vertex jupiter = graph.addVertex(null);
ElementHelper.setProperties(jupiter, "name", "jupiter", "age", 5000, "type", "god");
Vertex neptune = graph.addVertex(null);
ElementHelper.setProperties(neptune, "name", "neptune", "age", 4500, "type", "god");
Vertex hercules = graph.addVertex(null);
ElementHelper.setProperties(hercules, "name", "hercules", "age", 30, "type", "demigod");
Vertex alcmene = graph.addVertex(null);
ElementHelper.setProperties(alcmene, "name", "alcmene", "age", 45, "type", "human");
Vertex pluto = graph.addVertex(null);
ElementHelper.setProperties(pluto, "name", "pluto", "age", 4000, "type", "god");
Vertex nemean = graph.addVertex(null);
ElementHelper.setProperties(nemean, "name", "nemean", "type", "monster");
Vertex hydra = graph.addVertex(null);
ElementHelper.setProperties(hydra, "name", "hydra", "type", "monster");
Vertex cerberus = graph.addVertex(null);
ElementHelper.setProperties(cerberus, "name", "cerberus", "type", "monster");
Vertex tartarus = graph.addVertex(null);
ElementHelper.setProperties(tartarus, "name", "tartarus", "type", "location");
// edges
jupiter.addEdge("father", saturn);
jupiter.addEdge("lives", sky).setProperty("reason", "loves fresh breezes");
jupiter.addEdge("brother", neptune);
jupiter.addEdge("brother", pluto);
neptune.addEdge("lives", sea).setProperty("reason", "loves waves");
neptune.addEdge("brother", jupiter);
neptune.addEdge("brother", pluto);
hercules.addEdge("father", jupiter);
hercules.addEdge("mother", alcmene);
ElementHelper.setProperties(hercules.addEdge("battled", nemean), "time", 1, "place", Geoshape.point(38.1f, 23.7f));
ElementHelper.setProperties(hercules.addEdge("battled", hydra), "time", 2, "place", Geoshape.point(37.7f, 23.9f));
ElementHelper.setProperties(hercules.addEdge("battled", cerberus), "time", 12, "place", Geoshape.point(39f, 22f));
pluto.addEdge("brother", jupiter);
pluto.addEdge("brother", neptune);
pluto.addEdge("lives", tartarus).setProperty("reason", "no fear of death");
pluto.addEdge("pet", cerberus);
cerberus.addEdge("lives", tartarus);
// commit the transaction to disk
graph.commit();
}
}
但我收到以下错误..
Exception in thread "main" java.lang.Error: Unresolved compilation problems: The method makeType() is undefined for the type TitanGraph
at com.titanos.webservices.GraphOfTheGodsFactory.load(GraphOfTheGodsFactory.java:52)
at com.titanos.webservices.GraphOfTheGodsFactory.create(GraphOfTheGodsFactory.java:46)
at com.titanos.webservices.exampletest.main(exampletest.java:13)
我也附上了屏幕截图..
我找不到我在这个项目中缺少的依赖项。
您遇到编译错误，因为 TitanGraph 上没有方法 makeType()。如果您查看 Titan 0.4.4 javadoc for TitanGraph, you will see the available methods. See also the migration notes from Titan 0.3.2 to 0.4.0 which point out the breaking changes in the API. GraphOfTheGodsFactory.java 打包在 Titan 本身中，那么您可以从该代码中看到如何正确定义模式。
Titan 0.4.4 大约在 2 年前发布。 Titan 1.0.0 于 2015 年 9 月发布，如果您刚开始使用 Titan，这将是一个更好的起点。访问 Titan homepage 以获取所有版本的更多详细信息和文档。确保您的文档与您正在构建的版本相匹配。